Unraveling the Unique Behavior of Atomically Dispersed Pt on Zeolite Fe-DeAlBEA for Catalyzing Propane Dehydrogenation with Cofed Hydrogen DOI
Afnan Alghannam, Alexander J. Pattison, Sonali Das

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Апрель 11, 2025

Propene, used on a large scale to manufacture polypropylene and several commodity chemicals, is increasingly produced by catalytic propane dehydrogenation (PDH). Atomically dispersed Pt has emerged as promising candidate catalyst for PDH; however, stabilizing atomically at high temperatures challenging. Here, we demonstrate the use of dealuminated zeolite beta with Fe content host isolated Pt, which anchored strongly support Pt-Fe bonds. The sites exhibit PDH performance, including apparent forward rate coefficient propene formation (404.8-26.4 mol propene/mol Pt·bar·s) selectivity (≥96%) 823 K in presence H2. Kinetics data characterizing range loadings show that catalyzes rates independent H2 partial pressure, whereas metallic clusters, formed loadings, catalyze reaction slightly negative dependence pressure. shift speciation loading, confirmed infrared spectroscopy adsorbed CO, X-ray absorption spectroscopy, high-angle angular dark field scanning transmission electron microscopy, suggests observed change kinetics dispersion consequence mechanism.

Язык: Английский

Dynamic Behavior of Pt Multimetallic Alloys for Active and Stable Propane Dehydrogenation Catalysts DOI
Baraa Werghi, Shikha Saini, Pin‐Hung Chung

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(45), С. 30966 - 30975

Опубликована: Окт. 30, 2024

Improving the use of platinum in propane dehydrogenation catalysts is a crucial aspect to increasing efficiency and sustainability propylene production. A known practiced strategy involves incorporating more abundant metals supported catalysts, its activity stability while decreasing overall loading. Here, using colloidal techniques control size composition active phase, we show that Pt/Cu alloy nanoparticles on alumina (Pt/Cu/Al

Язык: Английский

Процитировано

3

Bifunctional Catalysts with Separated and Tunable Sites on Zeolites for Relay Catalysis of the Oxidative Dehydrogenation of Propane Using CO2 DOI
Wanting Li,

Tianchang Wang,

Xiaojuan Cao

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 8, 2024

Abstract The oxidative dehydrogenation of propane using CO 2 (CO ‐ODH) technology has broad application prospects in the production propylene and utilization , development efficient ‐ODH catalysts is great significance. However, it remains a challenge to develop highly catalyst that can activate both C─H C═O. Herein, PtZn/Co@S‐1 with very low precious metal content 0.2 wt.% reported. Benefiting from PtZn 4 nanoclusters dispersed on surface Silicalite‐1 zeolite tetrahedrally coordinated Co 2+ framework via relay catalysis, independent dual sites structure (PtZn/Co@S‐1) greatly promotes reaction high conversion rate C 3 H 8 (59.7%) (44.3%), selectivity 94.9%, thus upsetting equilibrium for direct propane. Experimental measurements density functional theory calculations suggest interfaces are likely carbon dioxide hydrogenation active respectively.

Язык: Английский

Процитировано

3

Mechanistic interpretations and insights for the oxidative dehydrogenation of ethane with CO2 over alkali metal modified Zn/SSZ-13 catalyst DOI
Lizhi Wu,

Wenchun Zheng,

Xiaofang Wang

и другие.

Molecular Catalysis, Год журнала: 2025, Номер 579, С. 115044 - 115044

Опубликована: Март 27, 2025

Язык: Английский

Процитировано

0

Catalytic hydrogenative depolymerization of castor shells C-lignin to catechols over the mixed Pd/C + Pd(OH)2/C System DOI Creative Commons

Fuyan Jiang,

Weimin Zheng,

Chaofeng Zhang

и другие.

Industrial Crops and Products, Год журнала: 2025, Номер 228, С. 120913 - 120913

Опубликована: Март 31, 2025

Язык: Английский

Процитировано

0

Unraveling the Unique Behavior of Atomically Dispersed Pt on Zeolite Fe-DeAlBEA for Catalyzing Propane Dehydrogenation with Cofed Hydrogen DOI
Afnan Alghannam, Alexander J. Pattison, Sonali Das

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Апрель 11, 2025

Propene, used on a large scale to manufacture polypropylene and several commodity chemicals, is increasingly produced by catalytic propane dehydrogenation (PDH). Atomically dispersed Pt has emerged as promising candidate catalyst for PDH; however, stabilizing atomically at high temperatures challenging. Here, we demonstrate the use of dealuminated zeolite beta with Fe content host isolated Pt, which anchored strongly support Pt-Fe bonds. The sites exhibit PDH performance, including apparent forward rate coefficient propene formation (404.8-26.4 mol propene/mol Pt·bar·s) selectivity (≥96%) 823 K in presence H2. Kinetics data characterizing range loadings show that catalyzes rates independent H2 partial pressure, whereas metallic clusters, formed loadings, catalyze reaction slightly negative dependence pressure. shift speciation loading, confirmed infrared spectroscopy adsorbed CO, X-ray absorption spectroscopy, high-angle angular dark field scanning transmission electron microscopy, suggests observed change kinetics dispersion consequence mechanism.

Язык: Английский

Процитировано

0